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在经济学说史上,边际效用价值论以首创量化分析而著名。边际效用理论认为,商品的使用价值量是可以互相比较的,而且效用大小也并非是一成不变的。商品的使用价值随着商品数量的增减而变化,商品数量增加,使用价值量则下降,反而数量减少则效用提高。现代概率论的创立进一步证实了边际效用价值论在定量分析上的科学意义。在概率论中,当某一变量的数值开始上升时,其对应值也开始上升,而且以较大幅度上升。
In the history of economics, the theory of marginal utility is famous for its first quantitative analysis. The theory of marginal utility holds that the value of the goods used can be compared with each other, and the utility size is not static. The value of use of goods changes with the increase or decrease of the quantity of the goods, the quantity of the goods increases, the value of the use value drops, but the quantity decreases and the utility increases. The establishment of modern probability theory further confirms the scientific significance of the marginal utility theory of value in quantitative analysis. In probability theory, when the value of a variable starts to rise, its corresponding value also starts to rise, and rises to a greater extent.